Affleck, who has long campaigned for Democratic candidates and who majored in Middle Eastern studies at Occidental College in Los Angeles, would face significant challenges: a lack of any previous political experience running for office; the need to raise cash quickly (or use his own); and a crowded Democratic field. He grew up in Cambridge, Mass., and currently owns a home in the Bay State, but under state law he also wouldn't need to establish legal residency until Election Day.

And it's unclear whether Affleck, a filmmaker who seems to be reaching a new career peak behind the camera, would have an interest in trying for elected office.